Side-drive butterfly valve mechanism for controlling flow

Abstract

The utility model discloses a side drive butterfly valve mechanism used for controlling flow, a valve plate used for controlling flow is arranged in a through hole of a valve body, the side drive butterfly valve mechanism is characterized in that the valve plate is of a hollow structure, fluid can flow through the middle position of the valve plate when the valve plate is in an open / closed state, and the drift diameter area of the through hole is changed by rotating the valve plate. The flow hole is formed in the valve plate, the purpose of controlling the flow drift diameter is achieved by rotating the valve plate, on the other hand, the rubber ring is arranged between the valve body and the valve plate, the valve plate is lubricated, metal contact is avoided, friction is reduced, and the adjusting precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a side-driven butterfly valve mechanism for controlling flow. Background Art

[0002] Most existing butterfly valve discs are solid, and the valve can be completely closed to prevent flow by controlling the disc's opening and closing angle. This structure is widely used, but due to the fluid pressure in the flow path, the operating mechanism and disc mechanism are prone to wear during the valve opening and closing process, shortening the valve's lifespan. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the present invention is to provide a low-cost and targeted control butterfly valve that does not require cutting off the flow path.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A side-driven butterfly valve mechanism for controlling flow is provided with a valve plate for controlling flow in the through hole of the valve body. The valve plate is a hollow structure, and the fluid can flow through the middle position of the valve plate when the valve plate is in the open / closed state. The diameter area of ​​the through hole is changed by rotating the valve plate.

[0006] In a preferred embodiment of the present invention, a circumferentially extending control ring is provided on the outside of the valve plate, and a plurality of flow holes are also provided on the inner side of the control ring. The plurality of flow holes are mirror-distributed with the center of the virtual circle surrounded by the control ring as the origin.

[0007] In a preferred embodiment of the present invention, a cross frame is further provided on the inner side of the control ring to provide support therefor, and the flow hole is located between the cross frame and the control ring.

[0008] In a preferred embodiment of the present invention, a transmission box is further provided on the valve body, and the transmission box enables the input shaft and the output shaft to be in different directions through a worm assembly.

[0009] In a preferred embodiment of the present invention, the utility model further comprises an output rod extending from the transmission case, wherein the output rod is drivenly connected to the valve plate via at least one pair of fixing pins inserted transversely on the cross frame.

[0010] In a preferred embodiment of the present invention, a rubber gasket is transitionally provided on the inner wall of the valve body through hole.

[0011] The beneficial effects of the present invention are:

[0012] The side-driven butterfly valve mechanism for controlling flow provided by the utility model is provided with a flow hole on the valve plate, and the purpose of controlling the flow path is achieved by rotating the valve plate. On the other hand, a rubber ring is arranged between the valve body and the valve plate to lubricate the valve plate to avoid metal contact, reduce friction and improve adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0014] Figure 1 It is an overall schematic diagram of the present utility model.

[0015] Figure 2 It is a planar sectional view of the present utility model.

[0016] Figure 3 yes Figure 2 AA cross-sectional view of FIG.

[0017] Figure 4 is a schematic diagram of the valve plate. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. The above description is simplified for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0019] As used in this specification, the singular forms "a," "an," "said," and "the" include the plural forms unless otherwise expressly stated. The terms "include," "comprise," and "contain" as used in this specification indicate the presence of the claimed features, but do not exclude the presence of one or more additional features. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0020] In the specification, when an element is referred to as being “on,” “fixed” to, “connected to,” or “engaged to,” etc., another element, the element may be directly on, fixed to, connected to, engaged to, or in contact with the other element, or intervening elements may be present. In the specification, when a feature is arranged “adjacent” to another feature, it may mean that the feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0021] The following describes exemplary embodiments of the present application with reference to the accompanying drawings. However, it should be understood that the present application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide many additional embodiments. In all figures, the same reference numerals represent the same elements or elements with the same function.

[0022] Figure 1 The overall structure of a butterfly valve mechanism is shown, primarily comprising a transmission housing 20 mounted on a valve body 30. A valve plate 40 connected to the transmission housing 20 is mounted within the valve body 30, and a handwheel 10 is attached to the side of the transmission housing 20. The axes of the handwheel 10 and valve plate 40 are perpendicular to each other. Turning the handwheel 10 changes the direction of force input through the transmission housing 20, driving the valve plate 40 open and closed, thereby controlling the flow rate of the butterfly valve.

[0023] refer to Figure 2 and Figure 3 The valve plate 40 is a hollow structure, so no matter what angle the valve plate 40 presents in the valve body through hole 32, the fluid can be allowed to pass through the valve plate 40. A first-stage transmission worm assembly 21 is arranged in the transmission box 20, and its input end is connected to the handwheel 10 through the input rod 11, and the output end is connected to the valve plate 40 through the output rod 22. Correspondingly, a pair of fixing holes 43 are opened on the valve plate 40, and the fixing pins 41 are inserted into the valve plate 40 and the output rod 22 from the outside of the fixing holes in turn to fix them. The output rod 22 is driven by the worm assembly 21 to realize the opening / closing control of the valve plate 40. A rubber ring 31 is arranged on the inner wall of the valve body through hole 32, which avoids the direct connection between the metal valve plate 40 and the valve body 30, reduces the wear between the parts, and can also improve the adjustment accuracy by lubricating the valve plate 40 with the special material of the rubber ring 31. Preferably, the rubber ring 31 is made of NBR rubber.

[0024] Combined with reference Figure 4 A cross-shaped frame 42 is positioned at the center of the valve plate 40. A control ring 45 extends from the center of the cross-shaped frame 42 to form the outer perimeter of the valve plate 40, engaging with the rubber ring 31. Four fluid flow holes 46 are also arranged on the valve plate 40. These holes 46 are mirror-imaged and distributed between the control ring 45 and the cross-shaped frame 42, with the center of the circle as the origin. Rotating the valve plate 40 changes the projected area of ​​the valve plate 40 on the valve body through-hole 32, thereby controlling the flow rate.

Claims

1. A side-driven butterfly valve mechanism for controlling flow, wherein a valve plate for controlling flow is provided in the through hole of the valve body, and is characterized in that: The valve plate has a hollow structure, and the fluid can flow through the middle of the valve plate when the valve plate is in the open / closed state. The diameter area of ​​the through hole is changed by rotating the valve plate. A circumferentially extending control ring is provided on the outside of the valve plate, and a plurality of flow holes are also provided on the inner side of the control ring. The plurality of flow holes are mirror-distributed with the center of the virtual circle surrounded by the control ring as the origin.

2. The side-drive butterfly valve mechanism for controlling flow according to claim 1, characterized in that: A cross frame is further provided on the inner side of the control ring to provide support for the control ring, and the flow hole is located between the cross frame and the control ring.

3. The side-drive butterfly valve mechanism for controlling flow according to claim 2, characterized in that: The valve body is also provided with a transmission box, which enables the input shaft and the output shaft to be in different directions through a worm assembly.

4. The side-drive butterfly valve mechanism for controlling flow according to claim 3, characterized in that: The invention also comprises an output rod extending from the transmission box, wherein the output rod is connected to the valve plate by driving via at least one pair of fixing pins inserted transversely on the cross frame.

5. The side-driven butterfly valve mechanism for controlling flow according to any one of claims 1 to 4, characterized in that: A rubber liner is also transitionally provided on the inner wall of the valve body through hole.

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